What is tourmaline?

A magical class of complex borosilicates that can't wait to straighten your hair, gauge your pressure, adorn your bling, or fuck you up the ass.

The electrical properties of tourmaline make it great for pressure guages, and it feels great crammed into my balloon knot.

tourmaline - meme gif

A device with several large beads meant to penetrate certain orifices on the human body

She was feeling very exotic, so she used a tourmaline for pleasuring ones self.